Figure 17-3: Wiring and power to test terminals
A. Voltmeter
B. 250–600 Ω resistance
C. External power supply
D. External power supply, if required
E. Transmitter with end-cap removed
c) Using a voltmeter, check the voltage drop across the resistor.
For a 250 Ω resistor, 4–20 mA = 1–5 VDC. If the voltage drop is less than 1 VDC, add resistance
to achieve a voltage drop within the required range.
d) Connect a Field Communicator directly across the resistor and attempt to communicate (poll).
If this test fails, the transmitter may need service. Contact customer service.
17.25 Locate a device using the HART 7 Squawk feature
The Squawk feature causes the device to show a specific pattern on its display. You can use this to locate or
identify a device.
Restriction
The Squawk feature is available only with HART 7 connections from the Field Communicator. It is not available
with ProLink III.
Procedure
1. Choose Service Tools > Maintenance > Routine Maintenance.
2. Choose Locate Device.
An 0-0-0-0 pattern is shown on the display.
To return to the normal display, activate any button on the device display, or wait 60 seconds.
Troubleshooting Configuration and Use Manual
March 2019 MMI-20025166
290 Micro Motion Model 5700 Transmitters with Configurable Outputs
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